1) HA + OH- = A- + H2O (2) HA + H3O+ = H2A+ + H2O (3) HA + H2O = H3O+ + A- (4) HA + OH- = H3O+ + A- (5) A- + H3O+ = HA + H2O (6) A- + H2O = HA + OH- (7) A- + OH- = HA + O2- Which one of these reactions (enter only the reaction number, 1 to 7) is mainly responsible for the fact that base added to the buffer solution causes only a very small change in pH?

Q: What is the molar energy of combustion (in kJ/mol) of C7H6O2 when 2.50 g of C7H6O2 burns completely…

A: Given Reaction:-2C7H6O2 + 15O2 -----> 14CO2 + 6H2OMass of C7H6O2 = 2.50g Molar Mass of C7H6O2 =…

Q: CALCULATIONS Answer the following in Question 1-2 involves the same process three different times.…

A: The objective of the first question is to convert the mass of NaHCO3 into moles. The molar mass of…

Q: Click the "draw structure" button to launch the drawing utility. Draw the product formed when the…

A: The addition of one equivalent of HCl to a diene follows an electrophilic addition mechanism. Here,…

Q: 2. Suggest the Grignard reagents and carbonyl compounds used to prepare the following products.…

A: Preparation of the alcohol based on the grignard reagent method.Aldehyde and ketone on reaction with…

Q: Include stereochemistry if applicable. Use a dash or wedge bond to indicate the stereochemistry of…

A: Information about the question

Q: Q3. Let fnf in LP, (fn) is called couchy in measure if for any e > 0,8>0 there exist k such that…

A: We need to prove that for any ε>0" data-mce-style="display: inline-block;…

Q: Which one of the following dienes is the most stable stereoisomer in its least stable conformation?…

A: A question based on the stability of alkenes. The most appropriate structure representing the…

Q: For this prelab, all solutions were prepared exactly as described in the lab manual; all data were…

A: The given question involves calculating the percentage by mass of acetylsalicylic acid (ASA) in a…

Q: Which solution is the most concentrated? Each choice refers to the same solute and solvent. 02.4 g…

A: Concentration of solution is the amount of solute dissolved in certain volume of solution.

Q: Calculate the mass of chlorine atoms in 5.0x1020 molecules of iodine trichloride, ICl3. Mmass ICl3 =…

A: molar mass of ICl3 = 233.26 g/molMolecules of ICl3 = 5.0*1020 moleculesAtomic mass of Cl = 35.45…

Q: Calculate the volume of oxygen consumed at SATP (25 ⁰C, 100kPa) by the combustionof 10.4 kg of…

A: The objective of this question is to calculate the volume of oxygen consumed during the combustion…

Q: A solution was prepared by mixing exactly 500 mL of 0.167 M NaOH with exactly 500 mL 0.100 M HCOOH.…

A: The objective of this question is to calculate the pH of a solution prepared by mixing NaOH and…

Q: What is the minimum distribution coefficient that permits removal of 98% of a solute from 50.0 mL of…

A: Information about the question

Q: Assign a designation of re, si, or N (not prochiral) to indicate which face we are looking down on…

A: Given  a structure of organic compound. Assign a designation of re, si or N (non prochiral).

Q: Determine the molar enthalpy of combustion of an unknown organic fuel if a 2.75 g sample increased…

A: Mass of organic fuel sample = 2.75gVolume of hot chocolate= 5.00× 103 mL C = 3.75 J/g•°C Initial…

Q: 12. Strong acid is added to a buffer solution that contains a weak acid (HA) and its conjugate base…

A: The question pertains to the behavior of a buffer solution when a strong acid is introduced into it.…

Q: HH NaH d 1) BH. Br 1) 2)

A: Alkynes show electrophilic addition reactions such as addition of halogen molecules, addition of…

Q: Estimate the behavior of the real gas using the van der Waals equation of state. To prevent gas tank…

A: The values are provided in questionmol of gas D n = 3.60 moltemperature of gas T = 251 degrees…

Q: A 100.00-mL sample of 0.2000M glycine, A+ form (see structure below), was titrated with 0.2000M of…

A: The objective of the question is to calculate the .

Q: What is the formal charge on the highlighted carbon atom in the given Lewis structure? :0: H H O-2 O…

A:

Q: draw reaction mechanism for this 2 reactons pls. Ar CF3 1.2 eq. of O+ 7 eq HNE₂ 0.1 eq CuS 0.2 eq.…

A: We have to draw the mechanism for the given reaction pathway.

Q: 2. a. b. The reaction scheme shown below describes the synthesis of compound J. (i) i G OH (excess)…

A: Aldehydes or ketones that contain  undergo condensation reactions in the presence of acids or bases…

Q: Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product…

A: An arrow always depicts from a region of high electron density to low electron density ; that is…

Q: i wish to request to get a detailed drawing and explanation for the questions yea and solutions for…

A: The objective of this question is to identify which of the given compounds has a stereoisomer that…

Q: Answer the following questions based on the phase diagram (not to scale!) for nitrogen. N₂. and on…

A: Phase Diagram: It is a schematic diagram showing different conditions of pressure and temperature at…

Q: Be sure to answer all parts. Identify the lettered compounds in the following reaction sequence. [1]…

A: A mixture of a solution of chromium trioxide (CrO3) in aqueous sulfuric acid and acetone solution of…

Q: NaNH2/liq.NH3 ? Q. What are the products of the following compounds when reacted with CI CH3 er Cl…

A: The given class of reaction falls under a special type of nucleophilic aromatic substitution, which…

Q: what is the structure of o-methylphenoxide anion and what is its pKa?

A: Acidity is defined as the ability of a molecule to release protons.If a compound easily donates…

Q: Be sure to answer all parts. Draw the intermediate structure for each step of the mechanism for the…

A:

Q: Part 1 out of 2 Step [1]: OH CH3 CI AICI 3 draw structure ... + undesired isomer

A: This is Friedel-Craft alkylation reaction. Phenol on reaction with chloromethane in presence of…

Q: What acid chloride would be needed to prepare the following ketone from benzene using a…

A: To prepare benzophenone via Friedel-Crafts acylation, you will need benzoyl chloride. The mechanism…

Q: When the concentration of B is doubled, the rate of the reaction A+8C increases by a factor of eight…

A: Understanding the reaction order is crucial in elucidating the mechanism and kinetics of a chemical…

Q: There are several alternate forms of double helical DNA. The Z DNA form is: O a) the standard…

A: The question is asking about the characteristics of Z-DNA, one of the many forms of DNA.

Q: Three molecules from a combinatorial library are given below: HO. ⑧88 HO 3 Finding a new drug…

A: Developing a new drug involves several steps, and the number of additional substituents needed can…

Q: For the reaction NO 2 (g) + CO (g) → CO 2 (g) + NO (g) The following three reaction mechanisms have…

A: The question pertains to the selection of the correct reaction mechanism based on an experimentally…

Q: What does the reaction of 4-Chloropentan-2-amine reacted with excess CH3l, Ag2O produce? O Hofmann…

A: The reaction start with the formation of a quaternary ammonium iodide salt by treating the amine…

Q: Given the skeleton structure shown below, what is the correct bond line structure? For this…

A: A question based on molecules. For the given skeletal representation the most appropriate bond-line…

Q: A 2 gram peanut is burned to heat water. The peanut has 6.5 kcal/gram. The water heats from 15C to…

A: The objective of the question is to calculate the mass of water heated.

Q: The titration curve between an acid and a base is shown below. a) Name an acid and a base that could…

A: An indicator helps in visualizing the end point of the titration. It changes colour at the end…

Q: When mixed in equal molar amounts, which of the following pairs of substances would create a buffer?…

A: The objective of the question is to identify which pair of substances, when mixed in equal molar…

Q: How many Ne atoms are contained in 32.0 g of the element? 1.07 x 10-21 atoms 3.88 x 1026 atoms O…

A: The question is based on mole concept.we need to calculate number of atoms present in given quantity…

Q: Using the method of initial rates, determine the rate law and rate constant, k for the following…

A: Suppose Rate law for this reaction is:Here: and are the order of reaction with respect to A2 and B2…

Q: Be sure to answer all parts. Devise a synthesis of X from the given starting materials. You may use…

A: The given compound can be synthesized based on the diels alder reaction.

Q: Be sure to answer all parts. Draw a stepwise mechanism for the following reaction. Part 1 out of 4…

A: The objective of the question is to give the mechanism

Q: Use the priority system to draw the structure of the following molecule:…

A: We have to draw the structural formula of 2-methoxy-3-methyl-5-oxoheptanoic acid Here, the…

Q: recrystallisation

A: 1. Dissolution: Start by dissolving the benzoic acid in a suitable solvent, such as hot water or…

Q: The empirical evidence that could be used to determine when this system reaches equilibrium is…

A: We have to find the equilibrium constant for the given reaction. The reaction is as follows - ICl…

Q: Now lets think about water and some general acid base reactions. Water is special because it can…

A: The provided question involves an exploration of water's unique properties as an amphoteric…

Q: (ii) Suggest a mechanism for the following transformation: OMe H3C + H CH3 CH3 NaOH; EtOH / H₂O OMe…

A: At first in this reaction,as we see that methyl proton is acidic in nature because it's conjugate…

Q: Draw the lewis structure for N,N-dimethylformamide, CHON(CH3)2 A. Does this compound allow for…

A: To solve this problem we have to first draw the Lewis Structure of N,N-Dimethylformamide. Lewis…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.